Return class name slugs in MobArenaHandler.

changelog.md

@@ -37,6 +37,7 @@ These changes will (most likely) be included in the next version.
 - Guardians and elder guardians no longer instantly retarget players when they break line of sight. This should make their behavior work a bit closer to vanilla.
 - Items in class chests are now cloned before they are made unbreakable and given to players. This fixes an issue where setting `unbreakable-weapons: false` had no effect on the items. Note that any affected items in existing class chests will need to be replaced.
 - The MagicSpells integration has been removed. This means that the extra `magicspells.yml` config-file (if it exists) no longer does anything and can be removed.
+- (API) MobArenaHandler now returns class name slugs in the `getPlayerClass()` methods.
 
 ## [0.104.2] - 2020-01-03
 - The region overlap check now works across both arena and lobby regions, i.e. all four combinations of intersections between two regions (arena-arena, arena-lobby, lobby-arena, and lobby-lobby) are evaluated.

src/main/java/com/garbagemule/MobArena/MobArenaHandler.java

@@ -159,7 +159,7 @@ public class MobArenaHandler
         ArenaClass ac = ap.getArenaClass();
         if (ac == null) return null;
 
-        return ac.getLowercaseName();
+        return ac.getSlug();
     }
 
     /**